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- The Theta Team
Adam, The Lufkin RPC uses four registers to determine belt slippage. They are Reference Revolutions (42261), Belt Slippage Percent (42260), NREVS (32612), and Belt Slippage (10003). The Reference Revolutions is the setpoint that is configured as the normal operating revolutions for the motor operation (when the belt slips the revolutions will increase). When the NREVS value which is the revolutions value read from the controller differs from the Reference Revolutions by a percentage greater than the Belt Slippage Percent (which is also a threshold configured by the user), the Belt Slippage will return a value of 1 meaning the belts are slipping and the well will alarm and likely go into downtime or shutdown. The two that are configured by the user are the Reference Revolutions and the Belt Slippage Percent. These can be configured through the XSPOC UI. To set the Reference revolutions a user can select a well that is operating normally and using the asset>>action drop down can select \”SAM Reference Revolutions\” to calculate the reference revolutions. Then from there the user can accurately configure the Reference Revolutions setpoint. Both setpoints can be read from the controller and edited/written out to the control in the asset>>setpoints screen.I hope this was helpful! Let us know if you need any additional information!